Brake for lineal-measuring registers



I E. EK.

BRAKE FOR LIMALMEASURING REGISTERS. APPLICATION FILED n.2, 1920.

-1;392,572. Patented 00a 4, 1921.

Hlllll lll UNITED STATES" PATENT OFFICE.

' mun EK, or ron'rnnnn, MAINE, AssrGNoRlTo amma, A conrom'rion or To all whom it mayco nceww of theUnited States, residing at Portland,

in the countyv of Cumberland and State of Maine, have invented certain 'new and useful Improvements in Brakes for Lineal- Measuring Registers, of which the following isaspecificationf I 2 Myinvention'relates'to meters for measuringlumber and other like material where the total length ofa plurality of pieces. is V V v .withbrake attachment.

I tobe automatically measured and indicated.

. lfore is to constructa pawl and ratchet mech- My present invention is particularly designed as'an improvement on the meter described andshown in my Letters Patent No. 888,599, dated Ma ne, 1908.

1 1n .mysaid meterthe measuring lwheel Under which the lumber or other material was made to pass, was journaled on the end of an arm which was pivotedto a support so that as the lumber passedunderthe wheel the latter wasliftedslightly and :made ,to -roll;along the stick of lumber}. 'When the wheel reached the. end of the stick, if,;.an-

other stick did not follow closely, the wheel would drop to its lower position hangingin the air, and the momentum of the wheel and other parts of the machine would. allow a considerable rotation of the wheel and the indication of lumber which had not in fact passed under the wheelfi In other words,

the :maehine would indicate'morethan .the

correctamount. I v

:To remedy thisdifliculty, I arrange a fixed brake which isdisposedso that as the wheel falls from the :end of the stick and drops to its low position, it comes in contact withithe brake and its rotation is at once checked. 'Thus no more lumber is indicated than actually comes in contact with the measuring wheelfand the correct num- I ber of lineal feet is always indicated on th meter..

It is'necessary in such measuring devices,

to prevent the-Iwheel'from running backward. and a pawl and ratchet mechanism 'is used for thi purpose but it-often happens that-.inadjuSting the, machine in different positions it is desirabletoreverse the measuring wheel on the shaftfsothat the wheel will. revolve in the opposite direction, reversing the ,metersothat the wheel will revolve in the same directionwith respect toathe shaft ofthe meter.v

=A'nother featu're of my. invention, there- Application filed mmhaiiaao. sefiainaeeana place by Specification 'of Letters Patent. Oct 4, 1921,

anisn which will allow the wheel to be reversed and torun in the opposite direction.

I accomplish this result by formingi ratchet teeth; on the wheel shaft, locating in the hub of: the wheel, a spring pressed pawl- :bolt whichimay befquickly turned and made to act in the opposite direction.

I haveillustrated' my. invention in it'srefemblefform in-the accompanying drawin-. Which, V

gurel is a @Fig. 2- is a plan of'the. same. i

Fig.6 isasec'tion ona maller scale taken the :line '1 1 of Fig. .2.

-;;Fig. etis afrear, view. 1 v Fig. 5 is a plan of the pawl bolt and,

Fig. 6 is a section through the wheel hub showing the pawl bolt in position.

Similar reference.'figures-ind1cate similar parts in the severalfigures ofthe drawing.

Referringto the drawing, 2 is the measuring.whe'el under which the stick of lumber 3 isdesigned tobe fed, the wheel resting on a standard 7Qand it .is arrangedtobe ide elevation of my meter -i:

vertically adjustable and to be secured in a clamping bolt 8.

On t e other side of the standard, from the arm 4which carries thewheel, i anotherarm 9 pivoted by itsinner end to the support-6 by the pin 5 andhaving its for- .ward end connect with the forward portion of the arm 4 so that the outer ends of the arms fi d form a Single partand rise and fall together. 1 l

Y On the-arm 9 is'located the meter properg;

1 O, the -shaft;11, which is in; line with the journal of the wheel2 and coupled to. it f so that as the wheel rotates it operates the 'shaft of the meter and indicates the number of linea -l feet which-has run through. A brakeis arranged in connection with the devicex in such a mannerthat when the wheel drops from the end of a ,piece of stock "the brake is automatically set and ySlXiES the rotation of the Wheel.

here shown, a pair of arms,

to the support 6 by the, pin. 5. The arm 13 13 and 14, are connected together at their rear en'ds'to form one member, the arms being pivoted is below the support andcarries at its inner end the brake 12 which acts against the surfaee of the friction wheel, clamping the wheel when the arms 13 and 14 are raised and releasing the wheel when these arms are lowered. The arm. 14, extends forward above the support, having anofi'set 15, at its inner necting' portion1-16*which rests when the end which is directlyin front of-the stand'- ard 7 v The arms 4 and 9 are united by a'conwheel'is not operating ongrestf 17, the latpl rojecting forward from the support 6.

I e adjustment is such that when the wheel is at its} lowe'stpointfthe 'p'art'16 bears on the rest-"17 and the brake is pressing against the wheel, but as soon asit begins to rise, the brake is'released.

I accomplishthis adjustment by means of] an adjusting screw 18 which extends vertically down throughtheofiset' 1'5 and impingesagainst the head of a pin19.' This pin 19 extends vertically through the connection 16 with the lower end of thegpin 9 aredown.

bearing on the rest 17 whenthe arms} and The pin'19 slides freely in its recess and 1' the head issomewhat above the upper'surface'of the part 16'when the arms 4 and 9 are down as shown in Fig. 3. When the Wheel is in'this position the adjusting screw 18{ is screwed down hard'enough so as to bring the brake into action; As soon as the wheel'lifts however the in 19, screw'l8 and the arms 13-and'14'ho d theibrake in the same place and the arms 4: and 9 are allowed torise slightly allowing the wheel to force itself from the brake.

' only a little allowance has to'be made for the motion. Whenjthe wheel again drops it comes again into contact with the brake and is held against rotation. The screw 18 isset to clamp the brake against rotation but can be adjustedto the wear of the brake lining. Y

' The brake may be applied: to the wheel otherwise than as I have shown and this principleofcheoking the momentum of the frictionwheel by a-brake may be applied to any friction wheel whether the same runs on top of the stock or beneath thestock;

It will be seen that'the arms f4 and 9 and the connecting part 16 are in effect a simple arm'since they all move upand down together asthe 'wheel'rises and falls. It is evident that my device may be used not only for lumber but for any articles of one long dimension which it is, desirable to measure andit will be understood in the claims and specifications that this term is used as the equivalent of other article's of the same general nature.

In Figs; 5 and 6 I have shown in the hub The vertical motion "of the part" 16 and the'wheel needs to be only sufiicient' to release the brake and of the wheel 2 the reversible bolt pawl. .20 i

is the wheel shaft having ratchet teeth therein and 21 is-a bolt pawl having the pawl proper 26 formed on its lower end; This pawl is pressed normally against the ratchet shaft 20 by spiral spring 23, held in the space within the hub occupied by the pawl and bearing against the lower edge of the collar 22. j

, The collar 22 isinserted and held inthe 'hub, the upper end of the collar having a flange 22*, The flange 1'22 has a slot" 2 1 in its upper surface extending entirely across from side to side and inthis slot rests the screw 25- whichfenters the sideof the bolt pawl 21' and holds it-in position. When the wheel is removed from the shaft 20 and reversed as it maybe, under certain conditions, the bolt '21'is; simply'lifted-unt'il K and wheel may be varied. r r

' Whatever may be, the relative position of the stock and the wheel when the former is withdrawn from contact with thewheel and resistance to such contact, then the brake comesautomaticall'y into operation to check the momentum and meter. p

stop the operation of the I claim? 1; In arotary; meter for measuring l'um' ioo ber and other. like stock, the combination of the support, an'ar'm pivoted" to said'su'pportby its rear end, a friction' wheel journaled on saidarm, a rotary indicatingltle vice on said arm, axially in line withsaid wheel and arranged to be operated'by'the rotation of" the wheel shaft and a brake'for said wheel arranged to be brought into action when the wheel is notsupported bythe stock.

2. In arotar'y' meter for measuringluinber and otherlike-stock, the 'combinationlof a support, awheel arm pivoted by one endto said support, a friction wheel journale'don said wheel arm, a brake arm pivotedto said support, a brake on said arm'positioned to actagainst said. wheel, an adjusting arm secured to said brake' arm', a rest on'said' support for upholding said wheel farm, a pin passing loosely through said Wheelarm and having ahead above the upper surfacetheref 5 of and an'adjusting screw extending through said adjusting arm and impinging onthe top of said pin p 3. In a rotary meter for measuringlumber and other like stock, the combination of a" support, a wheel arm pivoted to said sup-f port, a standard to which said support is adjustably secured, a brake arm pivoted to said support, abrake carried on said arm and arranged to act against said wheel, an adjusting arm connecting with the said brake arm, a rest on said support for upholding said wheel arm and means connected with said adjusting arm for supporting said brake in position, to be acted upon by the 10 downward motion of the Wheel.

4. In a rotary meter for measuring lumber and other like stock, the combination of a ratchet shaft, a measuring wheel on said shaft, a spring pressed bolt pawl in-the hub of the Wheel, engaging said ratchet shaft, a collar through which said bolt passes, having opposite grooves in its upper edge and a pin projecting'laterally from said bolt-pawl above said collar and positioned to rest in one of said grooves to regulate the acting position of said bolt-pawl.

In testimony whereof I have afiixed my signature.

EMIL .EK. 

